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PDP TELEVISION

SERVICE MANUAL

MODEL NO. PT4206

Please read this manual carefully before service.

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CONTENTS Part:PP06 Chassis Features and Circuit………

Part:Introduction on Circuit Functions of PT4206 ……

Part:Analysis on Signal Process of PT4206………

Part:Typical Defectives and Repair of PT4206…………

Annex: 1Main Assembly Drawing& of PT4206

2Wire Connecting Drawing of PT4206

Part:PP06 Chassis Features and CBU Contents

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1.1PP06 Chassis Technical Specifications 1.1.1 PT4206 Panel Datas

PT4206 is the most typical model using PP06 chassis; therefore we take PT4206 as an example.

PDP Panel Resolution 852×3(RGB)×480 Colors 16,777,216 Dot Pitch 1.095mm(H)×1.110mm(V) Brightness High brightness Contrast High contrast Lifespan of Panel 20000 Hours Viewing Angle U/D160 / L/R160 Response Time 933mmH×533mm(V)

Remarks: Brightness and contrast may vary because of different panels being used. PT4206 mainly uses SAMSUNG SDI panel model S42SD-YD04 or S42SD-YD05 1.1.2 Specification Sheet

1.2Main Features

1.2.1 Terminals

RF Input 1Rear S Terminal Input 1Rear

Recommended Input Format 640Ў Б480/60Hz 800Ў Б600/60Hz

Unsupportable Input Format Indication Yes

Color Temp. Adjust. Yes Quick Plug-In & Use Yes

PC

Picture Location Adjust. Yes

HD Signal Ј ЁYPbPrЈ ©

Compatible with 480PЎў576PЎў720P Ўў1080i

HD SignalЈ ЁDVIЈ ©

Compatible with 480PЎ ў576PЎ ў720P Ўў1080i and HDTV

Picture System PAL/NTSC/SECAM Sound System D/KЎ ўIЎ ўB/GЎ ўM Digital Comb Filter Yes 3D Comb FilterЈ ЁNTSCЈ ©

Yes

Video Ј ЁIncluding S-VideoЈ ©

Movement Compensation Function Yes Output Voltage 2Ў Б5W Audio Effect WOW NICAM/IGR Yes Video/YpbPr Audio Input Audio L/R

Audio

PC/DVI Audio Input Audio L/R Input Voltage 220V~, 50Hz

Rating Consumption

Ё Q400W

Standby Consumption

Ё Q3W

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A/V Input RCA1Rear YCbCr RCA1Rear DTV YPbPr RCA1Rear VGA/SVGA Input Hi-Density D-SUB 15 pin connector1Rear DVI Input 1 Rear A/V Output RCA Rear

Remarks: PT4206 is equipped with a service terminal, which service people can connect with PC RS232 terminal to upgrade the software. 1.2.2 Working Condition Requirement:

Temperature 040 Humidity 2070 Working Condition Requirement Altitude 02000m

1.2.3 Others

Tuning System FS Tuning236 Programs

NICAM Demodulation Yes Audio Effect Process AV stereoSRS WOW5 Bands Equalizer Picture Freeze TV/AV/S-VIDEO/YcbCr Only On Screen Display Chinese/English, Menu Location movable by user. Blue Background without Signal Yes Power Saving When TV is connected with PC input, while there is no

signal from PC, after 60 seconds, TV will be automatically off and enter into Power Saving Mode. Press any key on TV or R/C, or there is signal from PC again, TV will be switched on automatically.

Pixel Movement When this function is on, pictures will move on regularly to protect the screen.

White Screen Display When this function is on, the screen will be completely white to clear up slight shadowsplease see the instruction manual for more details

Home/Commercial Mode Optional Users can choose between 15 minutes auto-off without signal or 3 hours auto-off without operation please see the instruction manual for more details

1.3CBU Content

1.3.1 PDP Inside Drawing:

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rial No. Name Front Cabinet

Filter Glass Shelve Bar PDP Panel Module Down Cover Module etc. Back Cabinet

Remarks: This drawing is for references only, please see the main assembly diagram and wire-connecting diagram for details. 1.3.2 Circuit Content

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The main content of PP06 circuit include: Power Regulating Circuit, RF Circuit, VGA, Analog Video, Digital Video Signal Processing Circuit, System Control Circuit, Button Control Circuit. Reference drawing as below:

Part:Introduction on Circuit Functions of PT4206 2.1 Changhong PDP TV PT4206 main IC functions

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NO. NAME TYPE Function 1 N901 TDQ-6F7-FM2W Unify tuner 2 N601 MSP3410G-C12-100 Sound disposal 3 U705 TA2024 sound amplifier 4 U701 uPD64083GF-3BA NTSC 3D comb filter 5 N902 TEA6425D AV video switch 6 U1 VPC3230D-QA-B3 Digital video disposal 7 U6 MST9885 A/D converter 8 U11 SiI161BCT100 DVI signal disposal 9 U16 PW113-20Q Format transform and MCU

10 U17 AM29LV800BT-90 FLASH ROM 11 U22 DS90C383AMTD Difference transmit 12 U20 ST232CD RS-232 signal disposal 13 U7 24LC21A/SN E²PROMdisplay parameter information 14 U9/U13 SN74LVC126AD Suffer amplifier 15 U71 74LV32D Sync. face lifting enlarge 16 U8 24LC21A/SN E²PROMDVI parameter information 17 U19 24LC32A/SN E²PROMuser control information 18 U4 IS42S16400(A)-7T SDRAM 19 U5 PI5V330(Q) RGB/YpbPr switch 20 U3 PW1235 IP transform and picture improve

2.2Changhong PDP TV PT4206 main IC functions introduction 2.2.1 A/D converter MST9885 General The MST9885 is a fully integrated analog interface for digitizing high-resolution RGB graphics signals from PCs and workstations. With a sampling rate capability of up to 140 MHz, it can accurately support display resolutions up to 1280x1024 (SXGA) at 75 Hz. The clamped input circuits provide sufficient bandwidth to accurately digitize each pixel. The MST9885B provides a high performance highly integrated solution to support the digitization process, including the ADCs, a voltage reference, a PLL to generate the pixel sampling clock from HSYNC, clamping circuits, and programmable offset and gain circuits to provide brightness and contrast controls. When the COAST signal is asserted, the PLL will maintain its output frequency when HSYNC pulses are absent, such as during the VSYNC period in some systems. A 32-step programmable phase adjustment control (0-360 deg) is provided for the pixel sampling clock to adjust for the difference between the HSYNC edge and RGB pixel edge timing. The MST9885B can send output data through one 24-bit port at the pixel clock rate. The MST9885B can also support R, G, B to Y, U, V conversion. The MST9885B has internal programmable pattern generator for testing. The MST9885B can accept either standard TTL, CMOS levels or sawtooth vertical deflection signals for VSYNC input. MST9885 Pin Function Descriptions

Pin(s) name Function 7077 RED0RED7 Red output data

29 GREEN0 Green output data

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GREEN7 1219 BLUE0BLUE7 Blue output data

67 DATACK Output data clock 66 HSOUT HSYNC output 65 SOGOUT Sync-on- Green Slicer output 64 VSOUT VSYNC output 37 MIDSCV Internal mid-scale voltage bypass 58 REFBYP Internal reference bypass 31 VSYNC Vertical SYNC input 30 HSYNC Horizontal SYNC input 43 BAIN Blue analog input 49 SOGIN Sync-on- Green analog input 48 GAIN Green analog input 54 RAIN Red analog input 29 COAST Hold PLL frequency and do not track HSYNC 38 CLAMP External clamp input(we connect it to ground 55 A0 Serial interface address pin 56 SCL I2C busclock 57 SDA I2C busdata 33 FILT PLL connect to external filter

262739424546515259

62

AVDD Analog power

112223697879

V33 Digital output power

3435 PVDD PLL power 1102021242528323640414447505360616368

80

GND ground

MST9885 Block Diagram

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2.2.2VPC3230 General VPC3230 Pin Function Descriptions Pin No. Pin Name Short Description

13 R1G1B1IN RGB Analog Component Input 1 46 R2G2B2IN RGB Analog Component Input 2

76430111225356577465168

80

GND GND

8 NC NC 9 VSUPCAP Supply Voltage, Digital Decoupling Circuitry

1029364552

V33 Supply Voltage, Digital Circuitry

596976 AVCC Analog Voltage 13 SCL I2C Bus Clock 14 SDA I2C Bus Data 15 RESQ Reset Input 16 TEST Test Pin 17 VGAV VGAV Input 18 YCOEQ Y/C Output Enable Input

1923 FFIE NC 24 CLK20 Main Clock Output 27 LLC2 Clock Output 28 LLC1 NC

3134 3740

Y0Y7 YUV signal output (Digital ITU-R656 format)

4144 4750

C0C7 Digital chromatic signal output

53 INTLC Interlace scan control output (0-odd,1-even) 54 AVO Active Video Output 55 FSY/HC NC 56 MSY/HS Horizontal Sync Pulse output 57 VS Vertical Sync Pulse 58 FPDAT NC 60 CLK5 5 MHz Clock Output 61 NC NC 62 XTAL1 20.25M Analog Crystal Input 63 XTAL2 20.25M Analog Crystal Output 66 VRT Reference Voltage Top, Analog 67 I2CSEL I2C Bus Address Select 70 VOUT Analog Video Output 71 CIN Chroma / Analog Video 5 Input 72 VIN1 Video 1 Analog Input 73 VIN2 Video 2 Analog Input 74 VIN3 Video 3 Analog Input 78 VREF Reference Voltage Top 79 FB1IN Fast Blank Input

VPC3230 Block Diagram

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2.2.3PW113 General

The PW113 integrates an industry-leading scaler, an advanced OSD engine, a flexible input port system, system memory, and a powerful 80186-based horizontal and vertical image scaler swith intelligent Auto Image Optimization circuitryThe Image Processor supports NTSC or PAL video data with a 4:3 aspect ratio and 16:9 aspect ratio sources, such as DVD or HDTV. Video Input formats can be in either YUV4:4:4 (24 bit) or YUV4:2:2 (16 bit) input modesThe PW113 uses an integrated PLL to synchronize the display interface timing to the input timingAn integrated OSD controller supports sophisticated bit-mapped based OSDs The OSD controller supports transparent, translucent, and fade-in/ fade-out functions.

Pin Function Descriptions Pin(s) name Function

Video Port Pin Descriptions 71 VCLK VPort Pixel Clock input 74 VVS VPort Vertical Sync input 75 VHS VPort Horizontal Sync input 69 VFIELD VGPort Field Input 70 VPEN VPort Pixel Enable

4756 YUV0YUV7 VGPort ITUR656 Pixel Data.I/O port We use 47 MUTE mute control 48 PW1230E PW1235output enable49 VGASEL VGA/YpbPr select50 S1 sound system control51 DVIPD DVI interface standby54 STANDBY power standby control56 RST1 peripheral IC reset

Graphics Port Pin Descriptions 31 GCLK GPort Pixel Clock input 32 GVS GPort Vertical Sync input 33 GHSSOG GPort Horizontal Sync/GPort Sync- on-Green input 34 GPEN GPort Pixel Enable input

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35 GFBK GPort PLL Feedback / Line Advance Input 2027 GRE0GRE7 GPort Red Pixel Data input

10151819 GGE0 GGE7

GPort Green Pixel Data input

29 GBE0GBE7 GPort Blue Pixel Data input Display/Graphics Port Pin Descriptions

129136 DGR0DGR7 DGPort Red Pixel Data(odd outputs) 119122125128

DGG0DGG7 DGPort Green Pixel Data(odd outputs)

111118 DGB0DGB7 DGPort Blue Pixel Data(odd outputs) Display Port Pin Descriptions

106 DCLK DPort Pixel Clock output 108 DVS DPort Vertical Sync output 109 DHS DPort Horizontal Sync output 110 DEN DPort Pixel Enable output

96103 DR0DR7 DPort Red Pixel Data(even outputs) 8895 DR0DR7 DPort Green Pixel Data(even outputs) 7683 DB0DB7 DPort Blue Pixel Data(even outputs)

Microprocessor Interface Pin Descriptions 194 WR Write Enable low indicates a write to external RAM or other

devices 195 RD Read Enable low indicates a read to external RAM or other

devices 196 ROMOE ROM Output Enable low output indi cates a read from

external ROM. 197 ROMWE ROM Write Enable low indicates a write to external ROM. 198 CS0 Chip select signal 199 CS1 Chip select signal 193 NMI Non-maskable Interrupt

164173184187

192

A1A19 Microprocessor address bus output bits

148163 D0D15 Microprocessor 16-bit bidirectional data bus Peripheral Interface Pin Descriptions

207 PORTA0 DISPEN signal output(PDP display control) 206 PORTA1 READY signal inputPDP display ready 205 PORTA2 SDA 204 PORTA3 SCL 203 PORTA4 IR receive signal input 201 PORTA6 DVI digital interface select control 203 PORTA4 IR receive signal input

57586064

PORTB0 PORTB7

Key control input

39 PORTC0 MA-EN enable control 40 PORTC1 480ISEL 480I anti-copy control 41 PORTC2 RST-1235 PW1235 reset 42 PORTC3 DIGSEL DVI digital interface select 43 PORTC4 LVDSON LVDS enable control 44 PORTC5 S0 sound system control

4546 PORTC6 PORTC7

LED control

67 RXD Serial Receive Data 68 TXD Serial Transmit Data

Miscellaneous Pin Descriptions 142 TEST Test mode enable 139 RESET Bidirectional reset pin

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169 XI Crystal input 170 XO Crystal output

Power and Ground Pin Descriptions 16376584137185 VDD1 1.8V digital core power. 17386685138186 VSS Digital core ground 29527286104123140171208

VDDQ3 3.3V digital I/O power.

130537387105124141172

VSSQ Digital I/O ground.

165 VDDPA2 1.8V analog clock generator power. 166 VSSPA2 Clock generator analog ground. 167 VDDPA1 1.8V analog clock generator power. 168 VSSPA1 Clock generator analog ground.

PW113 Block Diagram

2.2.4PW1235 General PW1235 supports standard digital video signal incorporates deinterlacing

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scaling .the PW1235 is able to effectively deinterlace video input by creating motion vectors that follow frame-to-frame movement, and provide clear, progressive output in both analog and digital formats. The PW1235 integrates input interfaceMEMORY control circuitpicture improveoutput interface circuitI2C bus interface and so onall the function are controlled by I2C bus Pin Function Descriptions

Pin(s) Name Function Video Port Pin Descriptions

27 PVVS Primary Video (PV) Port vertical sync input. 28 PVHS Port horizontal sync input 25 PVCLK Port pixel clock input 26 CREF Video input clock reference 12 SVVS Port (ITU-R BT656 format) vertical sync input 11 SVHS Port (ITU-R BT656 format) horizontal sync input 13 SVCLK Port (ITU-R BT656 format) pixel clock input

30333538 VR0VR7 Video port red data input 15182023 VG0VG7 Video port green data input

1469 VB0VB7 Video port blue data input Digital/Graphics (DG) Port Pins

68 DGCLK Digital/Graphics (DG) port pixel clock 67 DGVS Digital/Graphics (DG) port vertical sync. 66 DGHS Digital/Graphics (DG) port horizontal sync

9192949597100

DGR0 DGR7

Digital/Graphics (DG) port red data

81848689 DGG0 DGG7

Digital/Graphics (DG) port green data.

70 73,75 76 7879

DGB0 DGB7

Digital/Graphics (DG) port blue data

Analog Display Port Pin Descriptions 156 ADR Analog display port red (V/Pr) data 153 ADG Analog display port green (Y/Y) data 150 ADB Analog display port blue (U/Pb) data 161 VREFIN Reference voltage input. 162 VREFOUT Reference voltage output. 159 RSET Full-Scale adjust resistor 160 COMP Compensation pin

Digital Display Output Port Pin Descriptions 102 DCLK Digital display output port pixel clock 103 DVS Digital display output port vertical sync 104 DHS Digital display output port horizontal sync. 108 DENR Display pixel enable red/Vertical blanking period

(VBLANK) 106 DENG Display pixel enable green 107 DENB Display pixel enable blue/Horizontal blanking period

(HBLANK) 145 DEN Digital display output port output enable

132 133 135 136 138 139 141142

DR0DR7 Digital display output port red data

121 122 124 125 127130

DG0DG7 Digital display output port green data.

110 111 113 114

DB0DB7 Digital display output port blue data.

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116119 Memory Pin Descriptions

229 MCLK SDRAM clock 223 MCLKFB SDRAM clock feedback 225 MRAS SDRAM row address strobe 226 MCAS SDRAM column address strobe 227 MWE SDRAM write enable

213210207204203206209211214217215220221218

MA0 MA13

SDRAM address bus

255252248245242239236232231234238241244247250254

MD0 MD15

SDRAM data bus

Host Interface Pin Descriptions 47 2WDAT SDA 45 2WCLK SCL 43 2WA1 Programmable two-wire serial bus address bit 1 44 2WA2 Programmable two-wire serial bus address bit 2

178179181186 MCUD0 MCUD7

MCU data bus

168170172174176177

PORTB1 MCU address bus

190 MCUCS Chip select 191 MCUWR MCUR/W signal 192 MCUCMD MCU command signal 188 MCURDY MCU Ready signal

Miscellaneous Pin Descriptions 56 TEST Test mode

144 TESTCLK Used for testing, can be used to supply display clock 55 RESETn Hardware asynchronous reset. 40 XTALI Crystal oscillator input 41 XTALO Crystal oscillator output

146 CGMS CGMS Enable 201 MVE Macrovision write protected enable

62, 63, 194,195 NC System Power Pin Descriptions 5, 34, 93, 123,140,

175,205, 235 VDD Digital core power (2.5V).

19, 49, 77, 112, 134, 187, 219, 251

VSS Digital core ground.

14, 29, 42, 54, 64, 69, 80, 90, 101,

109, 120, 131, 143, 165, 180, 200, 208, 216, 224, 230, 237,

243, 249, 256

PVDD Digital I/O power (3.3V).

10, 24, 39, 46, 57, 65, 74, 85, 96, 105, 115, 126, 137, 147, 171, 189, 193, 202, 212, 222, 228, 233,

240, 246, 253

PVSS Ground.

60 MPAVDD Memory PLL analog power 2.5V.

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61 MPAVSS Memory PLL analog ground. 58 MPDVDD Memory PLL guard ring / digital power 2.5V. 59 MPDVSS Memory PLL guard ring / digital ground.

197 DPAVDD Display PLL analog power 2.5V. 196 DPAVSS Display PLL analog ground. 199 DPDVDD Display PLL digital power 2.5V. 198 DPDVSS Display PLL digital ground. 157 AVD33R Analog power (+3.3V) for R (V/Pr) channel. 154 AVD33G Analog power (+3.3V) for G (Y/Y) channel. 151 AVD33B Analog power (+3.3V) for B (U/Pb) channel. 158 AVS33R Analog ground for R (V/Pr) channel. 155 AVS33G Analog ground for G (Y/Y) channel. 152 AVS33B Analog ground for B (U/Pb) channel. 163 ADAVDD Analog power supply (+2.5V) for the analog display port. 164 ADAVSS Analog ground for the analog display port. 149 ADDVDD Digital power supply (+2.5V) for the analog display port. 148 ADDVSS Digital ground for the analog display port. 166 ADGVDD Guard ring power for the analog display port. 167 ADGVSS Guard ring ground for the analog display port.

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PW1235 Block Diagram

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2.2.5TA2024 general: The TA2024 is a 10W/ch continuous average two-channel Class-T Digital Audio Power

Amplifier IC using Tripath’s proprietary Digital Power Processing™ technology. Class-T amplifiers offer both the audio fidelity of Class-AB and the power efficiency of Class-D amplifiers. Pin Function Descriptions

Pin(s) Name Function 2, 3 DCAP2, DCAP1 Charge pump switching pins 4, 9 V5D, V5A Digital 5VDC, Analog 5VDC

5, 8, 17 AGND1, AGND2, AGND3 Analog Ground 6 REF Internal reference voltage 7 OVERLOADB A logic low output indicates the input signal

has overloaded the amplifier 1014 OAOUT1, OAOUT2 Input stage output pins. 11, 15 INV1, INV2 Single-ended inputs

12 MUTE Mute control 16 BIASCAP Input stage bias voltage 18 SLEEP Sleep mode control 19 FAULT A logic high output indicates thermal

overload 20, 35 PGND2, PGND1 Power Grounds (high current)

22 DGND Digital Ground 24, 27; 31, 28 OUTP2 & OUTM2; OUTP1

& OUTM1 Bridged outputs

25, 26, 29, 30 VDD2, VDD2 VDD1, VDD1

Supply pins for high current H-bridges, nominally 12VDC.

13, 21, 23, 32, 34 NC Not connected 33 VDDA Analog 12VDC 36 CPUMP Charge pump output 1 5VGEN Regulated 5VDC source used to supply

power to the input section (pins 4 and 9).

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TA2024 Block Diagram

2.2.6DS90CF383A General

The DS90C383A/DS90CF383A transmitter converts 28 bits of CMOS/TTL data into four LVDS (Low Voltage Differential Signaling) data streams. A phase-locked transmit clock is transmitted in parallel with the data streams over a fifth LVDS link. Every cycle of the transmit clock 28 bits of input data are sampled and transmitted. At a transmit clock frequency of 65 MHz, 24 bits of RGB data and 3 bits of LCD timing and control data (FPLINE, FPFRAME, DRDY) are transmitted at a rate of 455 Mbps per LVDS data channel. Using a 65 MHz clock, the data throughput is 227 Mbytes/ sec. The DS90C383A transmitter can be programmed for Rising edge strobe or Falling edge strobe through a dedicated pin. The DS90CF383A is fixed as a Falling edge strobe transmitter.

Pin Function Descriptions Pin(s) Name Function

1,9,17,26,34 44

VCC Power supply

5,13,21,29,53 33,35,36,43,49

GND Ground

2,3,50,51,52 54,55,56

DRE0DRE7 8bit red data input

4,6,7,11,12,14 8,10

DGE0DGE7 8bit green data input

15,19,20,22 23,24,8,16

DBE0DBE7 8bit blue data input

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27 HSYNC Horizontal Sync input 28 VSYNC Vertical Sync input 30 DE pixel display enable 31 TXCLK IN pixel display clock input 32 PWRDWN LVDS control

37,38,41,42 45,46,47,48

TXOUT+ TXOUT-

4 channels LVDS data signal output

39,40 TXCLKOUT+ TXCLKOUT-

1 channel LVDS clock signal output

DS90CF383 Block Diagram

2.2.7DVI Digital Receiver SiI161B General

The Sil161B receiver uses Panel Link Digital technology to support high-resolution displays up to UXGA. The Sil161B receiver supports up to true color panels (24 bit/pixel, 16.7M colors) in 1 or 2 pixels/clock mode. In addition, the receiver data output is time staggered to reduce ground bounce that affects EMI. All Panel Link products are designed on a scaleable CMOS architecture. This ensures support for future performance requirements while maintaining the same logical interface. With this scalable architecture, system designers can be assured that the interface will be fixed through a number of technology and performance generations.

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Pin Function Descriptions

Pin(s) Name Function 90 RX0+ TMDS Low Voltage Differential Signal input data pairs 91 RX0- TMDS Low Voltage Differential Signal input data pairs 85 RX1+ TMDS Low Voltage Differential Signal input data pairs 86 RX1- TMDS Low Voltage Differential Signal input data pairs 80 RX2+ TMDS Low Voltage Differential Signal input data pairs 81 RX2- TMDS Low Voltage Differential Signal input data pairs 93 RXC+ TMDS Low Voltage Differential Signal input clock pair. 94 RXC- TMDS Low Voltage Differential Signal input clock pair.

4956 QO0QO7 8bit odd-pixel Blue output 5966 QO8QO15 8bit even-pixel Green output

6975,77 QO16QO23 8bit odd-pixel Red output 1017 QE0QE7 8bit even -pixel Blue output 2027 QE8QE15 8bit even -pixel Green output 3037 QE16QE23 8bit even -pixel Red output

99 RESERVED Must be tied HIGH for normal operation. 100 OCK_INV ODCK Polarity. A LOW level selects normal ODCK

output. A HIGH level selects inverted ODCK output. 1 HS_DJTR This pin enables/disable the HSYNC dejitter function.

To enable the HSYNC function this pin should be tied high. To

2 PD Power Down (active LOW). A HIGH level indicates normal operation. A LOW level indicates power down mode.

3 ST Output Drive. A HIGH level selects HIGH output drive strength. A LOW level selects LOW output drive strength.

4 PIXS Pixel Select. A LOW level indicates one pixel (up to 24-bits) per clock mode using QE[23:0]. A HIGH level indicates two pixels (up to 48-bits) per clock mode using QE [23:0] for first pixel and QO[23:0] for second pixel.

7 STAG_OUT Staggered Output. A HIGH level selects normal simultaneous outputs on all odd and even data lines. A LOW level selects staggered output drive.

8 SCDT Sync Detect. A HIGH level is outputted when DE is actively toggling indicating that the link is alive. A LOW level is outputted when DE is inactive, indicating the link is down.

9 PDO Output Driver Power Down (active LOW). A HIGH level indicates normal operation. A LOW level puts all the output drivers only (except SCDT and CTL1) into a high impedance (tri-state) mode.

44 ODCK Output Data Clock. This output can be inverted using the OCK_INV pin.

46 DE Output Data Enable. 47 VSYNC Vertical Sync input control signal. 48 HSYNC Horizontal Sync input control signal.

18,29,43,57,78 OVCC Output VCC 19,28,45,58,76 OGND Output GND

6,38,67 CVCC Digital Core VCC, 5,39,68 GND Digital Core GND.

82,84,88,95 DAVCC Analog VCC

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99,83,87,89,92 AGND Analog VCC 97 PVCC PLL Analog VCC 98 PGND PLL Analog GND. 96 EXT-RES Impedance Matching Control. In the common case of

50Ω transmission line, an external 390Ω resistor must be connected between AVCC and this pin.

SiI161B Block Diagram

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CHAPTER 3 CHANGHONG PDP TELEVISON PT4206

entire signal flow analyse

3.1Each part signal Disposal Flow general 3.1.1Analog signal Disposal Flow 3.1.1 .1RF Disposal TDQ-6F7-FMW2 disposal the RF signal Pin Function Descriptions

Pin(s) Name Function 1 VT Analog tune voltagenot use 2 BTL +32Vpower 3 BM +5V power 4 ADD Ground 5 S0 Color system Switch control 6 S1 Color system Switch control 7 SCL I2C busclock 8 SDA I2C busdata 9 SIF Second sound IF signal output

10 VIDEO OUT video signal output 11 VIF Power supply 12 AUDIO OUT Sound LF signal output(not use)

First the antenna signal enters the Unify RF TUNER N901, enlarge the RF signal , choose the back track of frequent and mix frequent circuit ,and outputs the IF signal. The video signal from the 9 pin through the video check wave, differs to clap at the same time the Second sound IF signal output.

The frequency synthesizing and tuning needs two power supplies when work normally:+ 32 V tune voltage and + 5 V PLL power supply.

Moreover 5 and 6 pin of N901 switch the Color system , sending out from 44 and 50 pin of PW113.10 pin of N901 outputs video signal ,follows to Q905 ,through the video switch circuit switching with the AV/ S- VIDEO Input signal ,after them disposal in VPC3230.

3.1.1 .2 SOUND Disposal

the 9 pin of N901 outputs the second sound IF signal, enlarged by the Q910,following to Q602 and passing C611 to the 67 pin of MSP3410G to carry on SIF demodulation and the NICAM identify the decodingThe sound of PC, DVI, AV, YCbCr, and YPbPr are transited to MSP3440, and then input to the speakers after transits to TA2024 and to the speakers. . 3.1.1.3 digital signal disposal

In response to input signal of PW113 ,it must convert the input analog video signal, VGA analog signal and DVI signal into digital or video decode outputinclude three partsone, VGA or YpbPr (analog signal)is converted the signal into A/D by MST9885it is 24bit digital tricolor signalsecond various video signalsinclude TV signal are disposalled by VPC3230 then output the signal format ITU-R656 YUV signalThe third part decode DVI1.0 standard digital signal then output 24bitRGB signal

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3.1.1 .4 VGA/YpbPr analog signal disposal R, G, B signal From the VGA 1, 2, 3 pin through the static electricity protection circuit switches with video signal from YpbPr input port in PI5V330. After then RGB signal(PC source) pass C81C82C84 to 544843 pin of MST9885 and A/D converter in it

Moreover , Vertical , Horizontal sync from the VGA 13,14 pin also send to the synchronous pulse orthopedics circuit after static electricity protect processing. Horizontal sync after face lifting in 74LCX32 sends to the PI5V330 to the switch , and then feedback to the 30 pins of MST9885, By the effect of Horizontal sync , MST9885 creates PLL lock providing the MST9885 work clock. Vertical sync after buffer and enlarge in U71 outputs from the 6 pin of U71, and choices in U9(74 LVC126s).In VGA mode ,the signal to the 31 pin of MST9885, provides a Vertical sync to the MST9885.

The PDP display is the exterior equipments, and need an identify signal to examined by host when host communication. The 24LC21s of U8( EEPROM) saves the hardware concerning display parameter.( install etc. such as the factory, model number, resolution) MST9885 under the control of PW113 bus, converts the R,G,B input 8 bit digital R,G,B signal. 67 pin outputs pixel clock signal DATACKThe above signal sends to the PW113 and PW1235s at the same time, disposals the format judged by PW113.

3.1.1.4 Analog video signal disposal 9 pin of N901 outputs video signal passes VN901 and goes to 1 pin of TEA6425Dat the

same time 1 channel AV video signal sends to the 8 pin of TEA6425Dand other channel S-video signal (YC signal) sends to 65 pin of TEA6425D respectively. The three signals switches in the TEA6425D. VIDEO or Y signal outputs toVPC3230D from 17pinC signal outputs from 18pinat the same time 19 pin video outputs from19 pinVPC3230 The signal from TEA6425 after switch and A/Dsend to chroma decode circuit ,which can identify PAL/NTSC/SECAM signal automatically and to each decode after identify. Such as NTSC video after identify the system switches the TEA6425D channel sends to NTSC 3D comb filter from 14 pin of TEA6425D. After digital 3D comb filter in uPD64083 YC signal sends back to 7371pin of VPC3230Dto AD convertor and saturation control etc. The output digital YUV signalswitches with digital YUV signal after A/D which inputs from 456pinand outputs digital YUV signal sends to video disposalinclude zoomcontrast panorama modebrightnessgain control tc. After then the signal transforms to from 3140pin digital YUV signal4:2:2(ITU-R656 format )and sends to PW1235 to DEINTERLACE etc

3.1.1 .5 DVI digital signal disposal We use DVI-D interface DVI digital signal4channels DS signalfrom DVI jack each send to 9091858680

819394pin of SiI161B. By the control of 1003pin (input bus)after in SiI161B(VCRdata resumesync. Head test enlarge circuitdecode circuit and logic interface circuit)it outputs digital R G B signalwhich has two modeone mode when 4 pin of SiI161B is low it output 24bit even pixelwhen 4pin is high it output 48biteven and odd pixel datawe connect 4pin to groundso each signal from 101720273037pin outputs R,G,B even pixel dataswitch with 24bit VGA digital signal disposalled by MST9885and send to PW113 to transform

24

formatfor sure ,the choice is control by PW113 DVI interface 67pin is DDC data channel U724LC21Ais an E2ROMwhich stores

some DVI data parameter information it connect to DDC data channel by busat the moment of power on the status information is sent to host to identifyafter identifyaccording to E2ROM information outputs digital signal correctly

VGA signalvideo signalDVI signal after digital disposalsends to video format disposal ic PW113 to change the video format outputs the digital R,G,B signal which fits PDP display driver PW113 the input video signal after disposalled by PW113outputs 852×480 resolution digital

R,G,B signal which fits PDP panel spec and relevant syncclock signal and transform them into LVDS by DS90CF383send to PDP panel to control the panel display correctly

3.2 each information flow 3.2.1 TV

25

Tuner

demodulation

1

CVBS

TEA6425 video

switch

17

74

VPC3230 Identify color system

VPC3230

Not NTSC

When NTSCChange the video

switch by bus

16

uPD64083 comb filter 88

NTSC video

Sync

separate

83 84

73

71

Y

C

PW1235 I

channel

SV

Digital video and clock

PW113SCALER

DS90C383

D

LVDS

SDRAM

B

UE

RF

MSP3410GFmorNICAM demodulation

SRS(WOW) sound67SIF

TA2024 sound

amplifier

27 28

S0 S1

PW1235E

LVDSON

Main control signal1RST1#

High enable2STANBY control

Low is power ON3 MUTE high mute

4sound switchS0S1

5PW1235EcontrolHigh enable

BUFFER and polaritycontrolled by Q3

6LVDSON control

MUTE

SO S1D/K 1 0

BG 1 1I 0 1

M 0 0

26

3.2.2 AV

8

cvbs

TEA6425

video switch

17

74

VPC3230Identify color system

VPC3230 decode

Not NTSC

NTSC switch

by bus

16

uPD64083

comb filter

88

NTSC

Sync separate

83 84

73

71

Y

C

PW1235 I channel

SV

Digital video and clock

PW11SCALER

DS90C38

D

LVDS output

SDRA

B E

MSP3410Sound switch

SRS(WOW) sound disposal

53

TA2024 sound amplifier

27 28

PW1235

LVDSO

MUT

E

54

L

R

27

3.2.3 S-VIDEO

6

Y

TEA6425 video

switch

17

Y

VPC3230

decode

PW1235 I

channel

SV

Digital video and clock

PW11SCALER

DS90C38

D

LVDS output

SDRA

B

UE

MSP3410

Sound switch SRS(WOW)

sound disposal

53

TA2024 sound amplifier

27 28

PW1235

LVDSO

MUT

54

L

R

5

C

74

18

72

C

28

3.2.4 YcbCr

DS90C3

LVDS

LVDS

ON

8

CVBS

TEA6425 video

switch

17

74

VPC3230

VPC3230

decode

Not NTSC

When NTSC,switch video

signal

16

uPD64083 comb

fliter

88

NTSC video

Sync.

separate

83 84

73

71

Y

C

PW1235 I

channel

SV

Digital video and clock

PW11

SCALER disposal

DS90C38

D

LVDS output

SDRA

B E

MSP3410Sound switch SRS(WOW)

sound disposal

53

TA2024 sound

amplifier

27 28

PW1235

LVDSO

MUT

E

54

L

R

29

3.2.5 YpbPr

PI330 switch

AD9883

G

PW113Format identify

PW113 SCALER

DS90C383

D

LVDS output

B

UE

Pr

MSP3410 Sound switch SRS(WOW) sound disposal

47

TA2024 sound amplifier

27 28

Y Pb

PW1235

LVDSO

MUT

VGASE

5 11 2

1

4 7 9

54 48 43

R G B

48

L R

30

3.2.6 VGA

PI330 switch

30

HS

MST988

G

PW11Foemat identify

PW113 SCALER

640X480800X600@60Hz signal

PW1235 P

channel

G

D

G

Signal after vertical sync

DS90C38

D

LVDS output

SDRA

B

UE

B

MSP3410

Sound switch

SRS(WOW) sound disposal

50

TA2024 sound

amplifier

27 28

R G

PW1235

LVDSO

Main control signal 1RST1#

High enable2STANBY control Low is power ON 3 MUTE

High mute4VGASEL control High enable 5PW1235E control

High enable BUFFER and polarity are

controlled by Q3

6LVDSON control

MUT

VGASE

3 6 10

1

13

HS

12 4 7 9

54 48 43

R G B

31U9VS

BUFER

PW1235

Not standard modeadjust

AD9883 switch the channel

51

L R

31

3.2.7 DVI

3.3system control process

After connect the AC power input (we use 3 pins power jackthe GND pin must ground well).first of all ,standby power workssignal mainboard takes 5V-ST power supply the powers of PW113 begin to workLED turns red. Resetting after V18V33 power is normalPW113 initializes the systemsends STANDBYLsignalwhich controls main power begins to workother power VT9VT5AVCCPVDDAVDDOVCCCVCCPVCCDAVCCAVDDAVCCDVDAPVDD also work normally.MST9885VPC3230SiI161BDS90CF383 take proper power supply. Moreover LED signal control LED to turn yellow and glitterit is said that it controls normally At last LVDSON signal from 43pin of PW113is highit let DS90CF383 begin to workAfter this it is in normal work stateinput source is last time source before power off

SiL161

G

PW113Format identify

PW113 SCALER

vertical sync 60HZ signal

PW1235 P channel G

D

G

Signal after vertical sync change

DS90C383

D

LVDS output

SDRA

B

UE

MSP3410

Sound switch SRS(WOW) sound

50

TA2024 sound

amplifier

27 28

PW1235E

LVDSO

MUT

Digital RGB or YPbPr

BUFFER

PW1235E

Not standard modeSwitch the channel

51

L R

32

3.3.1when choice VGA mode by remote device PW113 controls MST9885 by I2C busenable SiI161B and VPC3230let them work in low consume modewhich can save power and reduce interfereAt the moment VGASEL signal from PW113 output parks VGA input channel in PI5V330. If VGA signal inputs, MST9885 outputs Horizontal and Vertical Sync signal and data signaland send to PW113which outputs format commutation data . After DS90CF383(DS transmitter)it transforms to the signal fitting the PDP panel demand because SiI161BDS90CF383 both in normal work statewhen DVI signal inputs, display videoif no VGA signalMST9885 can not output digital Horizontal and Vertical Sync signal after examined by PW113,displays pc icon on the left and top of PDP panel other part display black. If no input after 60 sec, it hints to enter “save power mode” At the moment , MST9885 in normal work stateexamines VGA signal ceaselesslyso it can arouse automatically in VGA mode. It is said that when VGA signal inputs, it can work normally from standby state

3.3.2when in TVAVYCbCr mode by remote devicePW113 controls VPC3230 by I2Cbusotherwise PW113 controls MST9885 on the fly output in high impedance stateby I2Cbus.Because tuner N901VPC3230 DS90CF383 all in normal work statewhen video signal inputsPDP panel display normallyif no video signal inputunder the control of PW113PDP panel displays blue backgroundif no signal 15 minspower off automatically and into standby state. It can not arouse automatically

3.3.3When in DVI(digital RGB) mode by remote devicePW113 controls SiI161Band enables VPC3230and let it working in low consume modeotherwise PW113 controls MST9885 on the flyoutput in high impedance stateby I2C busbecause SiI161BDS90CF383 both in normal work statewhen DVI signal inputs, display videoif no DVI signalSiI161B do not output digital Horizontal and Vertical Sync signal after examined by PW113,displays DVI icon on the left and top of PDP panel other part display black. If no input after 60 sec, it hints to enter “save power mode”work stateAt the moment ,SiI161B in normal work state examines DVI signal ceaselesslyso it can arouse automatically in DVI mode. It is said that when DVI signal inputs, it can work normally from standby state

3.4power supply system

3.4.1main power supply D6Vsteady voltage to 5V supply for VPV3230AD9883 analog power5V-STstandby

powerto PW113AM29LV800BTROM24LC32MAX202EVDD(3.3V)VPC3230MST9885DS90CF383 power+32VRF tuner tuning powerA6Vsteady voltage to Av board 5V etc. A12Vsteady voltage to AV board 8V etc.12VAMPsound amplifier TA2024 power 3.4.2 main power form and power branch 3.4.2.15V-STpower branch

33

XP8012 pi n 5V-ST

N803LM1117-3. 3

N804LM1117-1. 8

XP10111 pi n

XPK311pi n

K boardconnect

U20MAX202E

U16 PW11316Ў ў37Ў ў65Ў ў84Ў ў137Ў ў185pi nVLL

NK605remot e head

VDK1LED

U16 PW113165Ў ў167pi nVPP

U17 29LV800B37pi n

U19 24LC328pi n

U16 PW11329Ў ў52Ў ў72Ў ў86Ў ў104Ў ў123Ў ў140Ў ў

171Ў ў208pi n

VUU

3.4.2.2D6V power branch

34

XP80111 pi n D6V N802

TA4805F

U5PI 5V330 16 pi n

U27LM1117-3. 3

U26LM1117-3. 3

U1VPC3230

U6 AD9883A26Ў ў27Ў ў39Ў ў42Ў ў45Ў ў46Ў ў

51Ў ў52Ў ў59Ў ў62 pi nVFF

U6 AD9883A34Ў ў35 pi nVEE

VCC

U28LM1086CSX-2. 5

U3 PW12355Ў ў34Ў ў93Ў ў123Ў ў140Ў ў

175Ў ў205Ў ў235 pi n

VXX U3 PW1235197Ў ў199 pi nVYY

U3 PW123558Ў ў60 pi nVZZ

U3 PW1235149Ў ў163Ў ў166

pi nЈ «2. 5

35

3.4.2.3VDD(3.3V) power branch

XP8018Ў ў9pi n

VDD

U11 Si L161B6Ў ў18Ў ў29Ў ў38Ў ў43Ў ў57Ў ў67Ў ў78Ў ў

82Ў ў84Ў ў88Ў ў95Ў ў97pi n

U4 I S42S16400(A)-7T1Ў ў3Ў ў9Ў ў14Ў ў27Ў ў43Ў ў49pi n

U3 PW123514Ў ў29Ў ў42Ў ў54Ў ў64Ў ў69Ў ў80Ў ў90Ў ў101Ў ў109Ў ў120Ў ў131Ў ў143Ў ў165Ў ў

180Ў ў200Ў ў208Ў ў216Ў ў224Ў ў230Ў ў237Ў ў243Ў ў249Ў ў256pi n

U3 PW123551Ў ў54Ў ў57pi n

U22 DC90C3831Ў ў9Ў ў26pi n

U10/ U12/ U14/ U15 74LVC162447Ў ў18Ў ў31Ў ў42 pi n

U22 DC90CF38334pi n

U22 DC90CF38344pi n

U6 AD988311Ў ў22Ў ў23Ў ў69Ў ў

78Ў ў79pi n

U71 74LV3214pi n

U1 VPC323010Ў ў29Ў ў36Ў ў45Ў ў

52pi n

t o reduce i nt er f erenceЈ ¬U11 power i s di vi ded i nt o

VDDЎ ўVI IЎ ўVJJ by LCf i l t erЎ Ј

97 pi n i s VI I powerЈ ¬82Ў ў84Ў ў88Ў ў95 pi n are VJJ

power

VNN

VOO

VNNЎ ўVOO i s i n order t oreduce t he i nt er f erenceЈ ¬f rom VDD af t er LC f i l t er

36

3.4.2.4A6Vpower branch

XP8051pi n

N806TA4805F

N805TA4805F

N650TA4805F

N601 MSP3410G65Ў ў66pi nVCCA6V

N601 MSP3410G11Ў ў12Ў ў13pi n

N901 TDQ-6F73Ў ў11pi n5VTUNER

TV vi deoЎ ўSI Ff ol l ow ampl i f er

ci rcui t

N702LM1117-2. 5

N703LM1117-3. 3

5V2

N701 i nput vi deoand out put YC

f i l t er ampl i f erci rcui t

5V-3D

U701 uPD6408353Ў ў81Ў ў92Ў ў

93pi nA2. 5V

N701 uPD6408331Ў ў32Ў ў45Ў ў46Ў ў64Ў ў

100pi n

D2. 5V

N701 uPD6408338pi nD3. 3V

N701 smal lsi gnal f i l t er

ampl i f er ci rcui t

37

3.4.2.5A12Vpower branch

XP8053pi n

N651TA78M08

PC/ YPbPr soundampl i f er+8V

N902 TEA6425D20pi n

N601 MSP3410G39pi n

AVOUT soundampl i f er

38

Part:Typical Defectives and Repair of PT4206

onered led do not light

red led do not light

yes no

Y N yes no

Check jack XP901 2 pin5V power supply

Check mainboard jack XP8012 pin 5V power

Check resistance RK2LBD VDK1

Check K boardiack XK01 11 pin5V power

Check power filterand power jackAC 220V input

1Check XP801 2 pin short circuitto ground whether or not 2Check mainboard L801 3Check PW113 reset circuitclockcircuit

Check circuitconnect

39

twoThe red led lightsbut doesn’t turn to yellow after power on and black display

power onЈ ¬checkXP801 4 pi n st andbyi s l owЁ Q0. 5Vvol t age

yes

ОЮ check N803Ў ўN804out put vol t age

checkXP801 D6VЎ ўVDDno

1Ў ўcheckconnect or2Ў ўcheck PDPpower

yes

1Ў ўcheck PW113power i mpedance2Ў ўcheckN803Ў ўN804

No

check X3 14. 318Mcryst al

Yes

No change Y2cryst al

check PW113RESET pi nvol t age

Yes

checkreset ci rcui tNo

check AM29LV800BT t oPW113 addressЎ ўdat aЎ ўcont rol

Yes

changeAM29LV800BT orPW113 and wi rebet ween t hem

I 2Cbus

1Ў ўcheck VPC3230Ў ўPW1235power ci rcui t2Ў ўcheck VPC3230Ў ўPW1235reset vol t age3Ў ўcheck VPC3230Ў ўPW1235per i pheral l y ci rcui t

normal

abnormal i t ycheck bus

ci rcui t and PCBwi re

40

threeThe red led lightbut turn to other color after power on and black display

change swi t chf i nd i f t here i si con on t hescreen

f ol l ow nopi ct ure t o checkYes

check mai nboardJ15Ј »check t hel i ne

No

Yes mend

check LVDSsi gnal

No1Ў ўLVDS ON i shi gn or not2Ў ўcheck PW113syncЎ ўpi xelcl ockЎ ўRGB dat asi nal

No

checkDS90c383power suppl y

Yes

check PW113out put por t Ј »change PW113

No

check powersuppl yNo

check DS90C383Ј ¬change

Yes

check PW113syncЎ ўpi xel

cl ockЎ ўRGB dat asi nal

Yes

check cryst alf requent Ј »checkPW113Ј »change

Yes

41

fourno picture check i f t herei s a i con t odi spl ay when

source swi t ches

no pi ct ure onl yVGA

check AD9883A30Ў ў31 pi n sync

Yes

change AD9883A

abnormal i t y

check sync f acel i f t i ng ci rcui t

and I / O syncwave

No

check VGA j ack

i nput abnormal i t y

check sync f acel i f t i ng ci rcui tand per i pheral l yci rcui t

out put abnormal i t y

no pi ct ure onl yDVI

check Si I 161B/ 169 Ј Ё44Ј ©Ј Ё48Ј ©Ј Ё47Ј ©Ј Ё42Ј ©pi n GCLKЎ ўGHSЎ ў

GVSЎ ўGFBK

checkSi I 161B/ 169cont rol si gnal

al l abnormal i t y

1Ў ўcheck si gnal source2Ў ўDVI j ack

3Ў ўchange Si i 161B

part abnormal i t y

ot her par t i sf ol l owi ng

CHECK PW113 G-Port Ј ¬Ј Ё31Ј ©-Ј Ё35Ј © pi nЈ ¬

changePW113No

42

i f t here i s onest at e t o di spl aywhen swi t ch t he

source

TVЎ ўAVЎ ўS-VDEOЎ ўYCbCr al l no

pi ct ure

onl y TVЎ ўAVЎ ўS-VI DE Ono

pi ct ure

onl y TVЎ ўAV i sNTSC no pi ct ure

onl y TV nopi ct ure

check PW1235power Ў ўcl ock

check VPC3230out put

check VPC3230power Ў ўcl ockЦУ

per i pheryci rcui t Ј »change

VPC3230

check and changePW1235Yes

No

repai r abnormal i t y check AV boardconnect or

check TEA6425DI / O

j oi nt wel l

check TEA6425powerЎ ўbusЈ »

change TEA6425

i nput wel l , but out put bad

check TEA6425D14pi n vi deo out out

check uPD64083resetЎ ўcl ockЎ ў

powerЈ »changeuPD64083

check uPD64083I / O f i l t er and

ampl i f er ci rcui t

Yes

check TEA6425D1pi n vi deo si gnal

i nput

checkand

changeTEA642

5D

No Yes

check TDQ-6F7powerЎ ўbus and

vi deo f ol l owwi ngout out ci rcui t

check and changeTDQ-6F7

43

Five picture dissimilation

pi ct uredi ssi mi l at i on

mosai c phenomena

check PW113power

check l i nervol t age ci rcui tNo

change PW113

change memori zerU19 24LC32AЈ ¬check PW113 andU19

No

col ourdi ssi mi l at i on

source swi t ch i fone mode i s wel l

or not

onl y VGA col ourdi ssi mi l at i on

onl y DVI col ourdi ssi mi l at i on

al l col ourdi ssi mi l at i on

check AD9883Aand 74LV16244

RЎ ўGЎ ўB di gi t alsi gnal

check Si l 161BУ лand 74LV16244

RЎ ўGЎ ўB di gi t alsi gnal

change U824LC21AЈ ¬

checkЈ Ё5Ј ©Ј Ё6Ј ©pi n

normal

changeu724LC21AЈ ¬checkЈ Ё5Ј ©Ј Ё6Ј ©

normal

check mai nboardpanel j ack

normal DS90C383A

normal

check PW113out put vi deo

si ganl

normal

f ol l ownext

pi ct ure

al l panel green

checkDS90C383A(37)- (42)(45)- (4

8)

changeDS90C383AЈ ¬

repai r out putconnect or

44

pi ct uredi ssi mi l at i on

l ack col ourЈ єnoRЈ ¬no G, no B

l ack f rontone anal og

si gnal

AV/ TV st at eVGA st at e

check C81Ў ўC82Ў ўC84

checkPI 5V330

check L901Ў ўL902Ў ўL905Ў ў

R904Ў ўR909Ў ўR910

change AD9883A

check PW1235out put dat a

check VPC3230out put

check VPC3230i nput si gnal

check and changePW1235No

check and changeVPC3230

pl ane crossbandi nt er f erence

VGA modecommendat ory

st at e

change U8Ј ¬checkЈ Ё5Ј ©(6)

pi n

DVI modecommendat ory

st at e

onl y VGAЎ ўDVInot commendat ory

st at e

change U7Ј ¬checkЈ Ё5Ј ©(6)

pi n

checkAD9883A andper i pheral l y

devi ce

check Si I 161Band per i pheral l y

devi ce

45

sixno sound or small sound

no sound orsmal l sound

check XP302Ў ўXP303Ј »sound box

connect or

Yes change sound boxcheck XP302Ў ў

XP303out put si gnal

check TA2024powerЎ ўmut e

check TA2024i nput si gnal normal

check MSP3410Gout put si gnal

check MSP3410G out putcoupl i ng ci rcui t C629Ў ў

C630Ў ўFB5Ў ўFB6Ў ўC522Ў ўC543Yes

check and changeTA2024normal

check MSP3410Gi nput si gnal

check 67 pi nSI SF i nputTV

check soundi nput

ot her source

check MSP3410GpowerЎ ўcl ockЎ ў

resetЎ ўbusYes

Yes

checkTDQ-6F7out put SI Fsi gnal

check SI F f i l t erampl i f erci rcui t

normal

check and changeTDQ-6F7abnormal i t y

check and changeMSP3410G

normal

check si gnalsourceЎ ўsoundj ackЎ ўi nput

coupl i ng ci rcui t

no i nput

46

Annex 1

Ч °Е дН ј

47

Annex 2

48

µ зФ ґВ ЛІ ЁЖчЧ йј ю

Д ЪБ Єµ зФ ґП Я

Ц ч° еЧ йј ю

° ґј ь° еЧ йј ю ° еЧ йј ю